Tactics against Necromancers.

Against Necropolis, take another Necropolis – you definitely won't go wrong! :)

That's also an option! ;)

And there's also a universal tool (of course, it's all relative, but...) - these are my favorite ancient behemoths. :) - 80% defense is nothing to sneeze at.

Well, that only works if you use a rushing tactic and on small maps... Otherwise, in the long run, Barbarians will undoubtedly lose to Necropolis, IMHO. The reason is the lack of strong magic and a rather peculiar set of creatures....